It’s a question of whether the above is supposed to mean (1/2)(-9.8), or 1/(2(-9.8)). Technically it’s ambiguous (I think), in practice it’s obviously the form

It’s a question of whether the above is supposed to mean (1/2)(-9.8), or 1/(2(-9.8)). Technically it’s ambiguous (I think), in practice it’s obviously the former, because if it was the latter you’d write it as 1/(2-9.8).